Automatic stop for well-tubing.



0. OGHSJ AUTOMATIC STOP FOR WELL TUBING.

APPLICATION FILED MAILS, 1913.

Patented NOV. 25, 1913.

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G. OGHS.

AUTOMATIC STOP FOB WELL TUBING. APPLICATION FILED MAE. 6,1913.

1,079,659, Patented Nov. 25, 1913.

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' To all whom it may concern:

UNITED STATES PATENT curios.

CLARENCE OCHS, 0F COALINGA, CALIFORNIA.

aoroiua'ric error non WELL-TUBING.

Specification of Letters Patent.

Patented Nov. 25, 1913.

Application filed March (5, 1918. serial No. 752,466.

Be it known that I, CLARENCE Gone, a

citizen of the United States, residing at,

Coalinga, in the county of Fresno and a State of California, have invented certaini new and useful Improvements in Automatioj Steps for Well-Tubing, of which the following is a specification.

" This invention comprehends new and useful' improvements in stops or arresters for well tubing and relates more particularly to devices which are adapted to be carried upon the tubing to automatically grip the interior of the well casing.

The primary object of this invention resides in the provision of a device of this -nature, in which a pair of sliding wedges "are so arranged as to automatically grip. -the interior of the well casing should the tubing be accidentally released as it was being drawn upward, or should it be desired to hold the tubing at any point within the casing. e

With these and-other objects in view, as will become more apparent as the descripta'in novel features of construction, combination, and arrangement of parts, as will be hereinafter described and claimed.

For a complete understanding of my invention reference is to be had to the following description and accompanying drawings, in i Figure 1 is a side elevation of my device, showing the same secured to a section of tubing, Fig. 2 is a longitudinal sectional view showing my device positioned within a well casing, Fig.' 3 is a top plan view, Fig.

' 4 is a bottom plan view, Fig. 5 is a transverse sectional view taken on the plane of line 5-5 of Fig. 2, and, Fig- 6 is a fragmentary elevation of one end of the body ofmy device, showing the manner of securing one of the springs thereto.

In the following description and accompanying drawings, similar parts will be referred to'and designatedby like characters of reference.

Referring in detail to the drawings by numerals, 1O designates a section of a well their upper extremities.

casing, and 11 a section of an oil tube positioned therein, both of these parts being of the common ordinary construction.

My device includes a tubular body portion, generally designated 12, which is rotatably secured upon the tube 11 and held against longitudinal movement thereon by means of collars l3 and 14. These collars are threaded into engagement with the tube, as clearly shown in Fig. 2. The body 12 is provided upon its periphery adjacent its upper end with a pair of diametrically opposed recesses 15. The side walls of the recesses are inclined downwardly and inwardly and are somewhat parabolical in outline. The bottom walls 16 of the recesses are disposed in a horizontal plane and limit the downward movement of the tapering wedges 17 The outer faces of these wedges are provided with downwardly facing teeth 18 which are arcuately shaped and conform to the curvature of the casing 10. The wedges taper upwardly and are provided upon their rear sides with the dove-tail projections 19 which are received within the correspondingly shaped slots 20 formed in the body 12. Vertical extension bars 21 are secured by means of suitable fasteners 22, to the inner faces of the wedges adjacent These bars work within longitudinal slots 23' which latter communicate at their lower ends with the recesses 15 and open at their upper ends on the top wall of the body 12.

A sleeve 24 is slidable upon the lower reduced end 25 of the body 12 and has pivotally attached to its periphery at diametrically opposite points adjacent the inner end thereof the links 26. These links extend upwardly through notches 27 formed in the body portion 12 and communicate with the recess 15. Suitable fasteners 28 secure the upper ends of the links to the bottom wall of the wedges 17. A screw ring 29 is threaded upon'the reduced portion 25 of the body 12 adjacent the lower end thereof and limits the movement of the sleeve 24 in one direction relative to the body 12. A key 30 looks the ring upon the body. A plurality of depending flat metal bowed springs 31 are secured to the sleeve 24 and engage the interior of the casing to hold the sleeve against movement when the body 12is being lowered. A laterally projecting flange 32 is secured to the collar 13 by means of the set screws 33 and j is recessed at diametrically opposite points, as

indicated at 34. The flange is also provided with a plurality of openings 35 and slots or recesses 35 for purposes to be hereinafter explained.

The body 12 is provided with the longitudinal peripheral channels 36 and the ring 29 is formed with the channels 37 in alinement with those first mentioned. Flat metal bowed springs 38. are rigidly secured at their upper ends within the channels 36 by means of the fasteners 39. The lower extremities of the springs are provided with the laterally extending projections 41, which retain said extremities within vertical slots 41 formed in the channels 37. These slots open upon the bottom end of the ring 29 and are shaped, as clearly shown in Fig. 4.

In use, the parts are positioned as shown in Fig. 2. When the tublng is being lowered within the casing 10, the flange 32 is positioned as shown in Fig. 3, so that it will prevent an upward movement of the wedges 17 and therefore hold said wedges away from contact with the interior of the casing. The upper extremities of the extension bars are received within the slots or recesses 35 and serve to lock the tube against rotation relative to the wedges. When it is desired to permit the wedges to grip the casing, the tube 11 is raised slightly to remove the extension bars from the slots 35 and then rotated a quarter of a revolution so as to uncover the upper ends of the slots 23. The stop bolt 42 checks the rotation of the tube when it has moved through a quarter of a revolution. During this rotational movement, the body 12 has been held stationary by means of the springs 38. Now when the pipe is lowered the springs 31 hold the collar against movement and the wedges 17 are forced into engagement with the casing so as to support the tube. The channels 34, 36 and 37 and the openings 35 permit gas and liquid to circulate around my device.

From the foregoing description in connection with the accompanying drawings, it will be seen that I have provided a very simple, strong, and support for oil well tubing, which will prevent said tubing dropping to the bottom of the casing at inopportune times and which will hold the tubing at any desired position within the casing.

It is to be understood that while I have shown and described the preferred embodiment of my invention, I donot wish to be limited to this exact construction, combination, and arrangement of parts, but may and reliable automatic stop longitudinal movement relative to the tubmg, a flange rigidly secured to the tubing in juxta-position to the top of the body, said flange preventing an upward movement of the stop members relative to the body; and means for holding the body a. ainstrotational movement, a rotation of t e tubing carrying the flange from the path of the stop members.

2. The combination with a well tube, of an automatic stop including a body rotatable upon the tube, stop members slidable upon the periphery of the body, spring means for holding the body against rotational movement relative to the tube, a recessed flange rigidly secured to the tube above the body, said flange normally preventing an upward movement of the stop members relative to the body; and a stop pin carried by the top of the body for engagement with the walls of one of the recesses formed in the flange, a rotation of the tube, relative to the body, moving the flange into or out of operative position relative to the stop members.

3. In an automatic stop for well tubing, the combination with a tube, of a body rotatable thereon, wedges slidable upon the eripherv of said body, upwardly extendlng extension bars carried by said wedges, means rigid wit-h the tube and movable into or out of the path of said extension bars; and means for holding the body against rotational movement relative to the tube.

4. In an automatic stop for well tubes, the combination with a tube, of a cylindrical body rotatable thereon. stop wedges slidable upon the periphery of the body adjacent the upper edge thereof, a sleeve slidable upon the body adjacent the lower edge thereof, links connecting the wedges with the sleeve, a plurality of main springs rigidly secured adjacent their upward extremities to the periphery of the body near the top thereof; and a plurality of secondary springs carried by the sleeve.

5. In an automatic stop for well tubes, the combination with a tube, of a body rotatable around the tube, means for holding the body against longitudinal movement relative to the tube, stop wedges slidable upon the body adjacent the top thereof, a sleeve slidable upon the body adjacent the bottom thereof, a link connecting each wedge to said sleeve, a ringcarried by the body adjacent the lower edge thereof, said ring being formed with vertical slots, a. plurality of main springs rigidly secured adjacent their upper extremities to the body near the top thereof, the lower ends of said sprin being received within the slots, a plurality of secondary springs carried by the sleeve; and means for normally preventing an upward movement of the wedges relative to the body. 10

In testimon whereof I afiix my signature in presence 0 two witnesses.

CLARENCE OCHS. Witnesses:

H. J; KRONINGER, PATRICK MCCARTHY. 

